Three Phase Induction Motors Reduced voltage starter can be used with Squirrel cage induction motor only but not with slip ring motor Slip ring motor only but not with squirrel cage induction motor None of these Squirrel cage as well as slip ring induction motor Squirrel cage induction motor only but not with slip ring motor Slip ring motor only but not with squirrel cage induction motor None of these Squirrel cage as well as slip ring induction motor ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors As load on an induction motor goes on increasing Its power factor goes on decreasing Its power factor remains constant Its power factor goes on increasing up to full load and then it falls again Its power factor goes on increasing even after full load Its power factor goes on decreasing Its power factor remains constant Its power factor goes on increasing up to full load and then it falls again Its power factor goes on increasing even after full load ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The no load speed of an induction motor depends on The number of its poles The supply frequency The maximum flux/poles Both supply frequency and number of poles The number of its poles The supply frequency The maximum flux/poles Both supply frequency and number of poles ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If a 4 pole induction motor has a synchronous speed of 1500 rpm, then supply frequency is _____ None of the listed here 60 Hz 50 Hz 25 Hz None of the listed here 60 Hz 50 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors If an induction motor is running at slip S, then rotor output is ______ S × rotor input (S-1) × rotor input (1+S) × rotor input (1-S) × rotor input S × rotor input (S-1) × rotor input (1+S) × rotor input (1-S) × rotor input ANSWER DOWNLOAD EXAMIANS APP
Three Phase Induction Motors The power factor of an induction motor under no load conditions will be closer to 0.5 leading 0.2 leading 0.2 lagging Unity 0.5 leading 0.2 leading 0.2 lagging Unity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS